So I was thinking to build my own voip system for my home. I've got a landline coming to my house. I was researching FXO cards and found out that they are really expensive so i'm thinking if i can take a old phone connect it to the landline and wire each button to the raspberry and the mic and speaker to a sound card after that i want to create a script so I can add it to an asterisk server so i can make calls. So my questions are:
- Is it possible
